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HACTEHA [7]
3 years ago
14

Please help me on this thanks! will giv brain liest if right.

Mathematics
1 answer:
egoroff_w [7]3 years ago
7 0

Answer:

10...?

Step-by-step explanation:

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A student was given an assignment to determine the percentage of students that brought a bag lunch to school. The student chose
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4 years ago
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One positive integer is 1 less than twice another. The sum of their squares is 461. Find the integers.
soldi70 [24.7K]

Answer:

10 and 19

Step-by-step explanation:

  • In Algebra, an even number = 2x, because anything multiplied by 2 is even.
  1. There are two numbers in the question, I'll define the first one as 2x
  2. the other number is 1 less than twice of the first, so I'm going to define it <u>in algebra as 2(2x) - 1</u>, which is just 4x - 1
  3. the square of the first is 4x^2
  4. the square of the second is 16x^2-8x+1
  5. add them together: 20x^2-8x+1
  6. this equation = 461, so 20x^2-8x+1 = 461
  7. simplify to 20x^2-8x-460 = 0
  8. I wont explain how to solve this here, since it is very complicated, if you don't know search up solving quadratics.
  9. the <u>solutions are 5 or -4.6</u>, it cannot be -4.6 since the question says positive, so the solution for <u>x = 5</u>
  10. substitute x into our equations for the two numbers in steps 1 and 2
  11. the <u>first number = 10, the second = 19</u>
8 0
2 years ago
Increase 80 by 12.5%
Luden [163]

Answer:

90

Step-by-step explanation:

6 0
3 years ago
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Help me out with this please?
swat32

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4.25

Step-by-step explanation:

5 0
4 years ago
What is f(x) = –4x2 + 24x + 13 written in vertex form? f(x) = –4(x – 6)2 + 23 f(x) = –4(x – 6)2 + 7 f(x) = –4(x – 3)2 + 4 f(x) =
nika2105 [10]
We have that
f(x) = –4x²<span> + 24x + 13
</span>
we know that

The vertex form for a parabola that opens up or down is:

f(x) = a(x - h)^2 + k

in the given equation, <span>a=-4</span><span>, therefore we add zero to the original equation in the form of </span><span>4h</span>²<span>−4h</span>²
f(x) = –4x² + 24x + 4h²−4h² +13
<span>Factor 4 out of the first 3 terms and group them 
</span>f(x) = –4*(x² -6x +h²) +4h² +13
<span>We can find the value of h by setting the middle term equal to -2hx
</span>−2hx=−6x
<span>h=3</span><span> and  </span><span>4h</span>²<span>=<span>36
</span></span>f(x) = –4*(x² -6x +9) +36 +13

we know that the term (x² -6x +9) is equals to------> (x-3)²
so
f(x) = –4*(x-3)² +49

the answer is
f(x) = –4*(x-3)² +49

 

4 0
4 years ago
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